WO2015162916A1

WO2015162916A1 - Stator and electric motor in which same is used

Info

Publication number: WO2015162916A1
Application number: PCT/JP2015/002182
Authority: WO
Inventors: 満柴田
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2014-04-24
Filing date: 2015-04-22
Publication date: 2015-10-29
Also published as: JP6002941B2; CN105210269A; JPWO2015162916A1; CN105210269B

Abstract

The present invention is provided with a stator core (7) that is configured in an annular fashion using a plurality of segmented toothed cores (8) and connecting segmented cores (9) that are the same in number as the segmented cores (8) and that are held in between the segmented cores (8). Also provided are upper insulators (10) and lower insulators (11) that sandwich the segmented cores (8) from the direction of the axis of rotation and winding wires (12) that are wound around the upper insulators (10) and the lower insulators (11). The connecting segmented cores (9) are pressed from the outer circumferential direction to further provide insulating members (13) that are held in between the upper insulators (10), the lower insulators (11), and the connecting segmented cores (9) on the outer circumferential side of the winding wires (12).

Description

Stator and electric motor using it

The present invention relates to an induction motor stator mainly used for a ventilation fan and an electric motor using the same.

Among induction motors used for ventilation fans, especially in induction transmitters with a stator with a small number of slots, the outer periphery of the winding space, that is, the opening of the winding, is hindered and narrowed by the outer core. Therefore, winding cannot be performed easily. For this reason, it is generally known that a former is dropped into a winding space from an opening by using a former.

In recent years, it has a winding frame made of an insulator, and the length of the outer wall of the winding frame is made shorter than the inner wall to widen the opening of the winding, and the winding is wound around the stator core via the winding frame. After that, a structure is known in which the winding space is utilized up to the curved portion of the outer peripheral portion by covering the portion that protrudes into the winding opening portion with an insulating member (see, for example, Patent Document 1).

However, in such a conventional electric motor, the stator iron core has a ring-shaped outer ring yoke portion, and the insulating member is made of an integrally molded product of insulating resin. After winding the stator iron core via a winding frame, Thus, since the insulating member is inserted into the stator core from above and below, the rigidity of the insulating member is required, which increases the thickness of the insulating member and narrows the winding space.

JP 2007-215263 A

Thus, the conventional motor has a problem that the winding space is narrowed.

The stator according to the present invention is formed in an annular shape by a plurality of divided core bodies having tooth portions and the same number of the divided core bodies and the connecting divided core bodies sandwiched between the divided core bodies. Equipped with a stator core. In addition, an upper insulator and a lower insulator that sandwich the split iron core body from the rotation axis direction, and windings wound around the upper insulator and the lower insulator are provided. Furthermore, by pressing a connection division | segmentation iron core from an outer peripheral direction, the insulating member hold | maintained between the upper insulator and the lower insulator, and the division | segmentation iron core for connection is provided in the outer peripheral side of a coil | winding.

According to the present invention, since the insulating member is pressed and clamped from the outer peripheral direction, the thickness necessary for inserting the insulating member from the vertical direction is not necessary, and the insulating member itself is pressed to the minimum thickness by pressing. Therefore, it is possible to minimize the space required for the insulation of the connecting split cores. As a result, the winding space can be expanded, and a small and high-performance motor can be provided.

This motor is particularly effective when used in a blower device (ventilation blower) that is small and requires high performance.

Furthermore, when winding is performed, there is no split core for connection, and the winding opening can be enlarged, so that the winding work can be performed easily.

FIG. 1 is a partially cutaway perspective view of an electric motor using a stator according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view of the stator according to the first embodiment of the present invention. FIG. 3 is an exploded perspective view of the stator according to the first embodiment before winding the stator. FIG. 4 is a main part configuration diagram of the stator according to the first embodiment of the present invention. FIG. 5 is a perspective view of the stator according to the second embodiment of the present invention.

Hereinafter, the stator according to one embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, the electric motor 1 according to the present embodiment includes a stator 2, a rotor 3 provided inside the stator 2, an upper cover 4 and a lower cover 5 provided outside the stator 2, and the stator 2. And a terminal block 6 provided between the upper cover 4 and the upper cover 4. In the electric motor 1, the rotor 3 rotates by energizing the stator 2 from the external power source through the terminal block 6. As shown in FIG. 2, in the present embodiment, the stator 2 includes a stator core 7, an upper insulator 10, a lower insulator 11, a winding 12 and an insulating member 13, and the lower insulator 11 has a temporary insulating member temporary. A placing portion 14 is provided. The insulating member temporary placement portion 14 is provided on the outer peripheral side of the lower insulator 11 and has a groove between the lower insulator 11 main body and the insulating member temporary placement portion 14. An insulating member 13 to be described later is inserted into this groove and temporarily placed.

The stator core 7 has a structure in which the divided core body 8 is divided into four parts, and the connecting divided core body 9 sandwiched between the divided core bodies 8 is divided into a total of eight parts. That is, the stator core 7 is configured by alternately connecting the divided core bodies 8 and the connecting divided core bodies 9 in an annular shape.

Moreover, the split iron core body 8 has a tooth portion protruding to the inner peripheral side. As will be described later, the winding 12 is wound around the tooth portion via the upper insulator 10 and the lower insulator 11.

Next, a method for manufacturing the stator 2 will be described.

First, as shown in FIG. 3, the divided core body 8 is sandwiched from above and below by the upper insulator 10 and the lower insulator 11 in a state where the divided core bodies 8 are arranged in a ring shape.

After sandwiching, the winding 12 is applied continuously for each phase.

After the winding 12 is applied, the insulating member 13 is temporarily held by the insulating member temporary placement portion 14 of the lower insulator 11 on the outer peripheral side of the winding 12. And the division | segmentation iron core body 8 and the division | segmentation iron core body 9 for a connection are fixed by welding, pressing the insulating member 13 from the outer peripheral direction with the division | segmentation iron core body 9 for a connection. In this way, the insulating member 13 is sandwiched between the upper insulator 10 and the lower insulator 11 and the connecting split core body 9.

According to the stator 2 of this embodiment, since the insulating member 13 is pressed and clamped from the outer peripheral direction, the insulating member 13 is insulated as shown in FIG. The member 13 can be thinned.

In addition, when the insulating member 13 is inserted from above and below, it is necessary to provide sufficient clearance to avoid friction due to contact with the winding, and the winding space becomes narrow. In the configuration of 2, the clearance is not required, and a wide winding space can be taken.

Further, the stator core 7 is divided into a split core body 8 and a split core body 9 for connection sandwiched between the split core bodies 8, and the split split core body 9 is mounted from the outer peripheral direction after the winding 12 is applied. By doing so, the opening part of the coil | winding 12 can be expanded and the operation | work which winds the coil | winding 12 can also be performed easily.

As described above, according to the stator 2 in the present embodiment, the space required for the insulation of the connecting split core body 9 can be minimized, and the winding space can be expanded. It is possible to provide a motor and a blower with good performance.

Further, since the opening for winding the winding 12 can be enlarged, the winding 12 can be easily wound.

Here, as a result of wide winding space, if the winding thickness is reduced, the stator and the electric motor using the stator are reduced in size. If the winding thickness is the same, the number of windings is increased and a motor with good performance is obtained. can get.

Further, in this embodiment, the insulating member 13 is held by the lower insulator 11. However, the upper insulator 10 has a function, for example, a convex portion is provided on both upper sides of the insulating member 13, and the upper insulator 10 is provided. The same effect can be obtained even in the case where the protruding portion is hooked on the insulating member temporary placement portion 14 to temporarily place it.

In the present embodiment, the description has been given by the configuration of the four divided core bodies 8 and the four divided core bodies 9 for connection. However, the divided core bodies 8 and the divided core bodies 9 for connection are alternately provided in an annular shape. If it is the structure which is made, the division | segmentation iron core body 8 and the division | segmentation iron core body 9 for a connection are not limited to four pieces.

(Second Embodiment)
As shown in FIG. 5, the stator core 7 a constituting the stator 2 a according to the present embodiment has four split cores 8 and four connecting split cores 9 sandwiched between the split cores 8. It is the structure divided | segmented into a total of eight. Further, the insulator 15 is integrally formed with the divided core 8 to manufacture the iron core 16, and after the insulating member 13 is held by the insulator 15, the divided core 8 is pressed from the outer peripheral direction. The insulating member 13 is sandwiched between the insulator 15 and the split iron core body 8.

According to the stator 2a of the present invention, since the strength of the insulator 15 can be increased, the insulating member 13 can be held with a thinner thickness than that of the first embodiment. Therefore, since a wider winding space can be secured, it is possible to provide an electric motor and a blower that are even smaller and have better performance.

In the present embodiment, as in the first embodiment, the description has been given by the configuration of the four divided core bodies 8 and the four divided core bodies 9 for connection. However, the divided core body 8 and the divided core core for connection are described. As long as the bodies 9 are alternately provided in a ring shape, the divided core bodies 8 and the connecting divided core bodies 9 are not limited to four.

As described above, the stator core constituting the stator includes a plurality of split core bodies and the same number of connecting split core bodies as the split core bodies sandwiched between the split core bodies, and an insulator is provided on the split core bodies. Winding is applied continuously for each phase sandwiched from above and below. After that, after the insulating member is held by the insulator, the insulating member is sandwiched between the insulator and the connecting split core by pressing the connecting split iron core from the outer peripheral direction.

With this configuration, since the insulating member is pressed and clamped from the outer peripheral direction, there is no need for clearance with other members that are required when the insulating member is inserted from the vertical direction. Further, there is no need to consider the dimensional variation in manufacturing the insulating member itself. Furthermore, since the insulating member itself can be compressed to the minimum necessary thickness by being pressed by the connecting divided core body, the space necessary for insulating the connecting divided core body can be minimized. As a result, the winding space and the winding opening can be enlarged.

In addition, according to this configuration, when the winding is wound, neither the insulating member nor the connecting split core is provided on the outer peripheral side of the insulator. In addition, the connecting split iron core is pressed and clamped from the outer peripheral direction. Therefore, there is no need for clearance with other members that are necessary when the insulating member is inserted from above and below. Further, there is no need to consider the dimensional variation in manufacturing the insulating member itself. Furthermore, since the insulating member itself can be compressed to the minimum necessary thickness by being pressed by the connecting divided core body, the space necessary for insulation between the winding and the connecting divided core body can be minimized. As a result, it is possible to increase the winding space and the winding opening.

Further, the core body may be manufactured by integrally molding the split core body with the insulator, the strength of the insulator can be increased, and the insulator can be made thinner, so that a wider winding space can be provided. It has the effect that it can be secured.

As described above, the electric motor and the air blower using the stator according to the present invention are small size, high efficiency, high output, which is an electric device that is required to realize a ventilation fan, an air conditioner, an air cleaner, an air conditioner. It is useful to install in a machine, dehumidifier, humidifier, etc.

DESCRIPTION OF SYMBOLS 1

Electric motor

2, 2a Stator 3 Rotor 4 Upper cover 5 Lower cover 6

Terminal block

7, 7a Stator core 8 Split iron core body 9 Split iron core body 10 Upper insulator 11 Lower insulator 12 Winding 13 Insulation member 14 Insulation Temporary member placement part 15 Insulator 16 Iron core

Claims

A plurality of split cores having tooth portions, the same number as the split cores, and a stator core configured in a ring shape with connecting split cores sandwiched between the split cores; and An upper insulator and a lower insulator; a winding wound around the upper insulator and the lower insulator; and an insulating member.
After the upper insulator and the lower insulator are sandwiched from above and below in the divided core body and the winding is continuously applied to each phase, and then the upper insulator or the lower insulator holds the insulating member A stator in which the insulating member is sandwiched between the upper and lower insulators and the connecting split core by pressing the connecting split core from the outer peripheral direction.
A plurality of split cores having tooth portions, the same number as the split cores, and a stator core configured in a ring shape with connecting split cores sandwiched between the split cores; and A winding wound around the insulator and an insulating member;
After the winding is continuously applied to each of the divided iron cores for each phase, the insulating member is held by the insulator, and then the connecting divided iron cores are pressed from the outer peripheral direction to thereby obtain the insulation. The stator which clamped the member between the said insulator and the said division | segmentation iron core for a connection.
A plurality of split cores having tooth portions, the same number as the split cores, and a stator core configured in a ring shape with connecting split cores sandwiched between the split cores; and
An upper insulator and a lower insulator that sandwich the split core from the direction of the rotation axis;
Windings wound around the upper insulator and the lower insulator;
The stator provided with the insulating member hold | maintained between the said upper side insulator and the said lower side insulator, and the said division | segmentation iron core body in the outer peripheral side of the said coil | winding.
An electric motor using the stator according to any one of claims 1 to 3.